Unable to find AppWidgetset.gwt.xml

i 've just created a vaadin maven project using arquetype like in the tutorial.
I just modifed the build section of POM in order to use the wildfly server instead of the jetty.







[/code]But when i try Maven/install i have the next error

 Unable to find 'AppWidgetset.gwt.xml' on your classpath; could be a typo, or maybe you forgot to include a classpath entry for source?

What does it happen?

It’s strange but now if i use Run configuration… with the goals

wildfly:deploy it runs correctly